Mailing List Archive Mailing List Archive
>Posted on 30 Jul 1996 at 09:42:29 by gmiiii@in*.co* >John, Saft makes nothing in dry cell nicad that compares to what I use, and >nickel metal hydrydides do not come in large enough sizes. You are right about >the partial charges - they are beeter treted that way than fully hammered. -G I didn't mean to suggest that Saft had batteries suitable for your needs. I just wanted to convey that the Ni sintering process available to Saft when they first started making Ni cells has not really been improved upon. The history of the NiCd rechargeable battery is fascinating. I feel like sharing the short version: The patent was Swedish and was filed in the 1930s (late 20s ?). The French Saft fiddled with NiCd chemistries in the early fifties but they got nowhere with non-flooded cells. Then as the story goes, the French president scoldingly showed the head of Saft a lead-acid powered German built cigarette lighter. Saft tried and tried but couldn't make a small enough NiCd battery with any useful capacity. Failing at matching the performance of the German lead-acid a Saft technician expressed his frustration by destroying a NiCd module in a powerful vice. Somehow the separator prevented the plates from shorting and the result was just about small enough for a lighter. A NiCd powered lighter was handed over to the President. Later Saft was shocked to learn from the head of State himself that unlike the German device the Saft cell didn't need a regular refill of water. Voila, the "modern" NiCd drycell was born. Regards, John cc015012@br*.br*.ed*
Navigate by Author:
[Previous]
[Next]
[Author Search Index]
Navigate by Subject:
[Previous]
[Next]
[Subject Search Index]
[Send Reply] [Send Message with New Topic]
[Search Selection] [Mailing List Home] [Home]